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Problem
Problem
If
x
,
y
x, y
x
,
y
and
z
z
z
are in AP and
tan
−
1
x
,
tan
−
1
y
\tan^{-1} x, \tan^{-1} y
tan
−
1
x
,
tan
−
1
y
and
tan
−
1
z
\tan^{-1} z
tan
−
1
z
are also in AP, then a.
x
=
y
=
z
x = y = z
x
=
y
=
z
b.
2
x
=
3
y
=
6
z
2x = 3y = 6z
2
x
=
3
y
=
6
z
c.
6
x
=
3
y
=
2
z
6x = 3y = 2z
6
x
=
3
y
=
2
z
d.
6
x
=
4
y
=
3
z
6x = 4y = 3z
6
x
=
4
y
=
3
z
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